Another jumps in before you can

Just before you were going to x-ray this Black Canary to find out her identity another one jumps in brandishing a night stick. Ah, so that's who the first one was.

"Hey, who the hell do you think you are?" says to second Canary

"We're friends, Laurel. I wish you'd calm down" you command

"Oh right... cool... How did you know my name?" she asks

"Same way I know Sara's" you reply

"That doesn't really give an answer to either name..." Sara queries

"I'll reveal that after we do another activity first" you say

"What activity?" both Canaries reply